QOP-1 trips and unable to reset
Action to be taken
a) Stop the train at the convenient place and check the traction power circuit no. 1 for any smoke, fire or any abnormality and check for any foreign body coming out through traction motor vent mesh (i.e. banding failure).
b) If any foreign body or wires projecting out through TM vent mesh, isolate that traction motor, both on positive and negative side, reset QOP 1 and clear the block section with speed not exceeding 15 Kmph and contact TLC for advice.
c) If there is any abnormality in the traction power circuit, isolate the defective equipment and try to reset the relay target. If the target is reset, close DJ and resume traction.
d) If the relay target does not reset, place HQOP-1 in OFF, reset QOP1, inform TLC and clear section. (Isolate RSI-1 block and clear section if load and road permits).
e) After clearing section, stop and secure the train, trip DJ, lower pantograph, switch off HBA, operate HOM and enter into the HT compartment.
f) Normalize HQOP-1 to ON and pack all 3 negative bits in (8, 10, 12) J1 and switch ON HBA.
g) If QOP1 trips, the fault is not in traction motors, switch off HBA and remove all the 3 packed bits in J1, place HQOP-1 in OFF position, energize the loco and work further with precautions.
h) If QOP1 not trips, conclude the fault is within the traction motors (1 or 2 or 3).
i) Remove the packed 8th bit from J1 and if QOP 1 trips, conclude TM 1 is having earth fault, again pack 8th bit and remove the packed10,12th bit and keep HMCS 1 in 2 and work with 5/6 th of the maximum permissible load.
j) If QOP 1 does not trip, remove the packed 10th bit, if QOP 1 trips, conclude TM 2 is having earth fault, again pack 10th bit, remove the packed 12th bit and keep HMCS 1 in 3 and work with 5/6 th of the maximum permissible load.
k) If QOP 1 does not trip, after removing 8,10th bit, conclude TM 3 is having earth fault, retain the packing in 12 th bit and keep HMCS 1 in 4 and work with 5/6 th of the maximum permissible load .
NOTE: 1) If relay QOP-1 not resetting even HQOP-1 in OFF position, place HOBA also in OFF along with HQOP-1 in OFF and try. 2) Note- In case of cam type reverser, bit packing is not possible, hence place HQOP 1 in off clear section with precautions and contact TLC
Action to be taken
a) Stop the train at the convenient place and check the traction power circuit no. 1 for any smoke, fire or any abnormality and check for any foreign body coming out through traction motor vent mesh (i.e. banding failure).
b) If any foreign body or wires projecting out through TM vent mesh, isolate that traction motor, both on positive and negative side, reset QOP 1 and clear the block section with speed not exceeding 15 Kmph and contact TLC for advice.
c) If there is any abnormality in the traction power circuit, isolate the defective equipment and try to reset the relay target. If the target is reset, close DJ and resume traction.
d) If the relay target does not reset, place HQOP-1 in OFF, reset QOP1, inform TLC and clear section. (Isolate RSI-1 block and clear section if load and road permits).
e) After clearing section, stop and secure the train, trip DJ, lower pantograph, switch off HBA, operate HOM and enter into the HT compartment.
f) Normalize HQOP-1 to ON and pack all 3 negative bits in (8, 10, 12) J1 and switch ON HBA.
g) If QOP1 trips, the fault is not in traction motors, switch off HBA and remove all the 3 packed bits in J1, place HQOP-1 in OFF position, energize the loco and work further with precautions.
h) If QOP1 not trips, conclude the fault is within the traction motors (1 or 2 or 3).
i) Remove the packed 8th bit from J1 and if QOP 1 trips, conclude TM 1 is having earth fault, again pack 8th bit and remove the packed10,12th bit and keep HMCS 1 in 2 and work with 5/6 th of the maximum permissible load.
j) If QOP 1 does not trip, remove the packed 10th bit, if QOP 1 trips, conclude TM 2 is having earth fault, again pack 10th bit, remove the packed 12th bit and keep HMCS 1 in 3 and work with 5/6 th of the maximum permissible load.
k) If QOP 1 does not trip, after removing 8,10th bit, conclude TM 3 is having earth fault, retain the packing in 12 th bit and keep HMCS 1 in 4 and work with 5/6 th of the maximum permissible load .
NOTE: 1) If relay QOP-1 not resetting even HQOP-1 in OFF position, place HOBA also in OFF along with HQOP-1 in OFF and try. 2) Note- In case of cam type reverser, bit packing is not possible, hence place HQOP 1 in off clear section with precautions and contact TLC
